Circular bioeconomy for biodiesel industry: Upgradation of waste glycerol to value-added products

2022 ◽  
pp. 419-438
Author(s):  
Shyamali Sarma ◽  
Vikash Kumar Dubey ◽  
Vijayanand S. Moholkar
Keyword(s):  
Value Added ◽  
Waste Glycerol ◽  
Biodiesel Industry ◽  
Value Added Products

scholarly journals High value-added products derived from crude glycerol via microbial fermentation using Yarrowia clade yeast

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Magdalena Rakicka-Pustułka ◽  
Joanna Miedzianka ◽  
Dominika Jama ◽  
Sylwia Kawalec ◽  
Kamila Liman ◽  
...  
Keyword(s):  
Lipid Content ◽  
Food Production ◽  
Crude Glycerol ◽  
Animal Feed ◽  
Carbon Sources ◽  
Value Added ◽  
Microbial Fermentation ◽  
Waste Glycerol ◽  
High Consumption ◽  
Value Added Products

Abstract Background Contemporary biotechnology focuses on many problems related to the functioning of developed societies. Many of these problems are related to health, especially with the rapidly rising numbers of people suffering from civilization diseases, such as obesity or diabetes. One factor contributing to the development of these diseases is the high consumption of sucrose. A very promising substitute for this sugar has emerged: the polyhydroxy alcohols, characterized by low caloric value and sufficient sweetness to replace table sugar in food production. Results In the current study, yeast belonging to the Yarrowia clade were tested for erythritol, mannitol and arabitol production using crude glycerol from the biodiesel and soap industries as carbon sources. Out of the 13 tested species, Yarrowia divulgata and Candida oslonensis turned out to be particularly efficient polyol producers. Both species produced large amounts of these compounds from both soap-derived glycerol (59.8–62.7 g dm−3) and biodiesel-derived glycerol (76.8–79.5 g dm−3). However, it is equally important that the protein and lipid content of the biomass (around 30% protein and 12% lipid) obtained after the processes is high enough to use this yeast in the production of animal feed. Conclusions The use of waste glycerol for the production of polyols as well as utilization of the biomass obtained after the process for the production of feed are part of the development of modern waste-free technologies.

Bioprocessing of Biodiesel Industry Effluent by Immobilized Bacteria to Produce Value-Added Products

2017 ◽  
Vol 185 (1) ◽  
pp. 179-190 ◽  
Author(s):  
Jyotsana Prakash ◽  
Rahul Kumar Gupta ◽  
Priyanka XX ◽  
Vipin Chandra Kalia
Keyword(s):  
Value Added ◽  
Immobilized Bacteria ◽  
Industry Effluent ◽  
Biodiesel Industry ◽  
Value Added Products

scholarly journals Isolated Microorganisms for Bioconversion of Biodiesel-Derived Glycerol Into 1,3-Propanediol

2017 ◽  
Vol 74 (2) ◽  
pp. 43 ◽  
Author(s):  
Laura MITREA ◽  
Lavinia Florina CĂLINOIU ◽  
Gabriela PRECUP ◽  
Maria BINDEA ◽  
Bogdan RUSU ◽  
...  
Keyword(s):  
Experimental Studies ◽  
Value Added ◽  
Biodiesel Production ◽  
Bacterial Strains ◽  
Nutrient Source ◽  
Raw Glycerol ◽  
Waste Glycerol ◽  
Microbial Development ◽  
High Concentrations ◽  
Value Added Products

During biodiesel production, massive amounts of raw glycerol are created generating an environmental issue and the same time an increase of biodiesel production cost at the same time. This raw glycerol could be converted by specific strains into value-added products, like 1,3-propanediol (1,3-PD), an important monomer used in the synthesis of biodegradable polyesters.The present work is based on recent scientific articles and experimental studies on the targeted topic, namely on the use of bacterial strains for bioconversion of biodiesel-derived glycerol into valuable products, like 1,3-PD. Concentrations, yields and productivity of 1,3-PD are presented for various bacterial strains. Important results as respects the microbial bioconversion of biodiesel-derived glycerol into 1,3-PD were registered for strains like Klebsiella pneumoniae, Citrobacter freundii, Escherichia coli and Lactobacillus diolivorans.From this study can be concluded that waste glycerol may be used as a nutrient source for microbial development and the production of 1,3-propanediol with high concentrations and yields.

OPPORTUNITIES FOR STRATEGIC DEVELOPMENT OF BIO-ECONOMY IN THE FOOD AND TOURISM INDUSTRY

2018 ◽  
Vol 28 (5) ◽  
pp. 1681-1684
Author(s):  
Georgi Toskov ◽  
Ana Yaneva ◽  
Stanko Stankov ◽  
Hafize Fidan
Keyword(s):  
National Level ◽  
Value Added ◽  
Tourism Industry ◽  
Small Companies ◽  
Food Sector ◽  
Strategic Development ◽  
Innovation Potential ◽  
Wide Range ◽  
Foreign Brands ◽  
Value Added Products

The European Commission defines the bioeconomy as "the production of renewable biological resources and the conversion of these resources and waste streams into value added products, such as food, feed, bio-based products and bioenergy. Its sectors and industries have strong innovation potential due to their use of a wide range of sciences, enabling and industrial technologies, along with local and implied knowledge." The Bulgarian food industry faces a lot of challenges on the local and national level, which have direct influence on the structure of the production companies. Most of the enterprises from the food sector produce under foreign brands in order to be flexible partners to the large Bulgarian retail chains. The small companies from the food sector are not able to develop as an independent competitive producer on the territory of their local markets. This kind of companies rarely has a working strategy for positioning on new markets. In order to consolidate their already built positions for long period of time, the producers are trying to optimize their operations in a short term. However, the unclear vision of the companies for the business segment does not allow them to fully develop. Tourism in Bulgaria is a significant contributor to the country's economy.

Oxidized indium with transformable dimensions for CO2 electroreduction toward formate aided by oxygen vacancies

2020 ◽  
Vol 4 (7) ◽  
pp. 3726-3731
Author(s):  
Fenghui Ye ◽  
Jinghui Gao ◽  
Yilin Chen ◽  
Yunming Fang
Keyword(s):  
Crucial Role ◽  
Oxygen Vacancies ◽  
Value Added ◽  
Promising Technique ◽  
Co2 Electroreduction ◽  
Value Added Products

Electroreduction of CO2 into value-added products is a promising technique in which the structure of the catalyst plays a crucial role.

Sign in / Sign up

Export Citation Format

Share Document